#include <stdio.h>
int main()
{
	int c, s;
	float p, w, d, f;
	printf("please enter price,weight,discount:");
	scanf_s("%f,%f,%d", &p, &w, &s);
	if (s >= 3000) c = 12;
	else c = s / 250;
	switch (c)
	{
	case 0: d = 0; break;
	case 1: d = 2; break;
	case 2:
	case 3: d = 5; break;
	case 4:
	case 5:
	case 6:
	case 7: d = 8; break;
	case 8:
	case 9:
	case 10:
	case 11: d = 10; break;
	case 12: d = 15; break;
	}
	f = p * w * s * (1 - d / 100);
	printf("freight=%10.2f\n", f);
	return 0;
}